Door lock



Oca. 28. w24. 1,512,915

S.v EDELSON DOOR LOCK Filed Oct. 20. 1921 V9 2 t l 3 4/ f' 56 G l y -1 I /f I /LIIB 34g Patented 9ct. 28, 1924.

L STATES asien PATENT OFFICE.

DOOR LOCK.

Application filed October 20, 1921. Serial No. 509,038.

To all whom it may concern:

Be it known that I, SAuUEL EDnLsoN, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Door Locks, of which the following is a specification.

My invention relates to door locks. The object of my invention is to provide a simple and inexpensive lock of strong construction which will protect a door against `forcible opening. My improved lock notonly prevents the door being swung open on its hinges but it also prevents it from being forced edgewise as by a jimmy or similar instrument. It is common practice for burglars to apply a jimmy to the edge of a door to force the door edgewise,and there is generally sufficient clearance between the door and its frame to permit the door to be forced. edgewise sufficiently to allow a knife or other iiatinstrument to be inserted between the door andv the door frame, for the purpose ofn moving the bolt of the lock back and thus permit the door to be opened. AThe purpose of my invention is to fprotect the door from beingforced edgewise in the manner described, as well as preventing it from being forced open by a swinging motion; or in other words, to perform the same function as the ordinary lock and in addition, to prevent jimmying. I am awarev that locks have been devised to give this double protection, but they have been complicated and expensive and they have complicated mechanism which has to be operated each time the `key is turned to lock and unlock the door. In the present lock a single plate and bolts of the simplest construction and operated by simple means of ordinary construction may serve to .lock the door, in conjunction with certain locking means on the casing and the sash plate.

In thev drawing forming part of this applicationy Figure 1'-is an elevation of the lock with lthe cover removed to show the interior mechanism, Figure 2-is a side view of the frame plate or keeper, Figure S--is a sectional view taken on the line 3-3 of Figure 1, showing the lock and frame plate or keeper, Figure L--is a faceview of the lock applied toa door, Figure 5-is a side elevation of the frame plate or keeper, Figure G-is a sectional view showing' the bolts and the keeperFigure 7,-is a sectional view on kthe line 7-7 of Figure 3-and Figure 8 is a plan view of the frame plate or keeper.

I have shown my invention applied to an ordinary swinging door l and the door frame .plate 2 is attached to the door frame. The door .frame plate 2 is here shown as embodying' a plate portion V3 whichy is set -ber in place.

The frame member 2 is, so formed as to provide sockets 9 above and below the bolt socket l0. The latter is preferably half round as shown, to conformto the shape of the bolt. The front of the housing 6 is formed with shoulders 11 and 12 and the block 15 is formed with shoulders 13A and 14 which constitute dovet'ail pocketsl 16 to receive the male portions ofthe lock casing, as will appear hereafter. Y l

The lock comprises a casing or shell 17 having a closing cover 19 secured thereto by screws andrforming an enclosure 18 in which the mechanism of the lock is enclosed. The lock casing is secured to the door by screws 21 passing through the wall 2O and entering the door.

The lock casing is provided with an eX- tension preferably formed integral therewith. This extension forms an abutment at 23 for one edge of the cover; and it forms a projection which is U shaped as viewed i which cooperate With the dovetail sockets 16 in the door frame member 2.

A single sliding bolt plate 28 may be vused for locking the door to reduce the mechanism fth'e lock tothe simplest `form. Herein 'Ihave'jsh'w'n a horizontally sli'ding plate 28 With a laterally eXtended'head 29 having three bolt members 30, .31, "32'arranged in a vertical row. The central bolt member 31 is arranged to enter the socket 10 in the block 15 on the door frame member 2. The bolt member 30 entersthe cross socket 33z inthe .housing-behind the projectioiis`11,13. ,Thethirdbolt member l32 likevvise ent/,ers thesocket .34 behind thefpro- Jjelcti'ens,12,'14 ofthefhousing. The several bolt meinb'ersarepreferably half round in 'oss section asA shown, as this construction offbolt'ynotonly strongly resists'lateral pressurevbut the curvature at 35 in the housing makes afstrong construction yof the projections and the curva-tures'36 ofthe block 15 also makes the construction oflthis block vstrong for thequantity volf metal used.

Anyform of mechanism maybe used for operating'the boltV plate. I have shown the platef'28 encirclingt-lie axis of vthe inside knobf37. YPivote'd at 38to `theplate 28 is the, dead locking arm 39 which has a pro 4jecti'on4'0\tojengage on either side of the block'41ofthe casing tosecure the bolt .plate Y28 in either projected or retracted po si-tion, Iand'thespring 42 ,presses this member down onto the block butpermits Vit'to 35* be'raised either by the operation of the knob or the key. This deadlock member'has a finger 43Vprojecting into the path ofthe '-armsll4i4 on the hub 45 of theknob member vwhereby the mem'ber'39 may be'rocked to disengage-theprojection 40 from the block 41-`When the knob is turned. This unlocks vtheplate 28 to permit'- the bolts to be projected orretracted.v The plate 28 has pro- 4-jecti'oi 1s-46, 47 lwhich are engaged by the arms'44 so that the plate'28and the bolts are `moved to the right or left When the knob "is tur-ned.

y There is -a barrel 49- conta'in-ingthe usual `tumblers and which receives the key, and there is atongue 5() which is turned ,by the tumblers andv this tongue turns tlie'sleeve 51 onvr the cover.

The sleeve 51f'has an arm 52 which operates on the same membersas do the arms 44 to release the deadlock member; 39 and to shootf the bolts. There ris no-thing new-in this device for operating the `boltj'plate'and so aras my present invento the doorv frame ,eachftime the door is closed (the bolts being retracted at suoli times) the projections 24, 25 move into the sockets 16 as a result of theswinging movturned or a key is inserted into the barrel 49 and it'isturned, in either case the plate 28 being m-oved to project the bolts. The

ibolt'31 Will enter the socket 10 and the bolts 30, 32 will enterthe sockets 33, 34 respectively. The door'is noW securely locked in all directions. The door can not becpened by a swinging motion4 on its hinges'because thev bolt 31 engages inthe socket.` 10, antik-because the b olts'3`0, `'32 .lie -behinditheprojecti'ons-andthereforeoan notinove away `from theVA door frame. Thereis, therefore,

the resistance ofthe threebolts tov any out- Ward swing of the door. The'. doo'r can Ynot loeforced edgewise ras by a jimmy because of the dovetail shape of theprojections'24, ,25 and of the sockets in which they` engage. Any edgewise.` movement yof the door Lis i resisted by the enlarged heads-26` engagingy the vprojections of the frame member: 2. yllhereitore,I the door is held against movementk in or' the -key is turned in thenreverse `direction The door may thenbe swung openfreely.

vall directions. To unlock the door theknob V`With the; present device each timefthe door is closed it iswinj con-dition to'belooke'd by the simple operation'-ofprojecting the bolts'andthis locks the door against movement in every direction. n

-Havingr described m515-invention `what I claim is l 1. A-lock comprisingia meinbenadapted to befsecured to the door:frame-andehaving interlocking, dovetail sockets adapted tol receive lprojections ony the lock casi-ngfinone direction, land having sockets to V.receive bolts 1n another directionfaflock casing fhaving interlocking, dovetail projections adapted to enter said dovetailsockets as thefdoor is closed, and sliding' bolts movable -in said dovetail projections into andv out'f0fsaid. boltv socketsV in said first member,- said #bolts projecting laterally beyond said --l-dovetail f projections.

2. A lock comprisingla memberf-adapted to lbe secured to thedoor frameand having interlocking, dovetail sockets to receive -projections on the lock Vcasing in 'one-direction, and `having sockets' toreceive Abolts"in`an other direction, a lock casing havinginterlocking, dovetail projections of substantially U shaped cross section, adapted4 toenter said dovetail' sockets, and ,bolts-sliding .inf said dovetail projections sandi adapted ftoeenter -said 'bolt sockets, -saidAA boltsproject'ingfilaterally beyond said dovetail projections.

3. AV lock comprising a member adapted to be secured to the door frame and having iso a block provided with a socket to receive a bolt and having interlocking dovetail sockets above and below said socket to receive projections on the lock casing as the door is swung closed, a lock casing having interlocking, dovetail projections of substantially U shaped cross section, adapted to enter said dovetail sockets, a plate and a plurality of bolts thereon, one of which is adapted to enter the socket in said block and 10 the others being adapted to slide in said dovetail projections and to interlockingly enfrage said rst member.

igned at they city, county and State of New York, this 8th day of October, 1921.

SAMUEL EDELSON. 

